The fiberglass panels that you bought from HD with the popcorn looking finish is called Chemlite. I used it both on my bus and on my truck in the bathroom. It is the same material that commercial refer trailers and trucks are lined with-so it is good and tough. Good Luck, TomC

I think its a great choice and not because I used it in the early 90s for a basement bath ceiling. It was then at Home Depot also I believe, and was being used commercially in such situations with the dairy industry probably the first as I recall reviews.